9815999730263 has 8 divisors (see below), whose sum is σ = 10395612159408. Its totient is φ = 9236631821184.

The previous prime is 9815999730239. The next prime is 9815999730323. The reversal of 9815999730263 is 3620379995189.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9815999730263 - 2²⁶ = 9815932621399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9815999730863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61047356 + ... + 61207937.

It is an arithmetic number, because the mean of its divisors is an integer number (1299451519926).

Almost surely, 2^{9815999730263} is an apocalyptic number.

9815999730263 is a deficient number, since it is larger than the sum of its proper divisors (579612429145).

9815999730263 is a wasteful number, since it uses less digits than its factorization.

9815999730263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122260033.

The product of its (nonzero) digits is 198404640, while the sum is 71.

The spelling of 9815999730263 in words is "nine trillion, eight hundred fifteen billion, nine hundred ninety-nine million, seven hundred thirty thousand, two hundred sixty-three".